rbtree_test: add extra rbtree integrity check

[platform/adaptation/renesas_rcar/renesas_kernel.git] / lib / rbtree_test.c

diff --git a/lib/rbtree_test.c b/lib/rbtree_test.c
index af38aed..9951503 100644 (file)
--- a/lib/rbtree_test.c
+++ b/lib/rbtree_test.c
@@ -117,8 +117,7 @@ static int black_path_count(struct rb_node *rb)
 static void check(int nr_nodes)
 {
        struct rb_node *rb;
-       int count = 0;
-       int blacks = 0;
+       int count = 0, blacks = 0;
        u32 prev_key = 0;
 
        for (rb = rb_first(&root); rb; rb = rb_next(rb)) {
@@ -134,7 +133,9 @@ static void check(int nr_nodes)
                prev_key = node->key;
                count++;
        }
+
        WARN_ON_ONCE(count != nr_nodes);
+       WARN_ON_ONCE(count < (1 << black_path_count(rb_last(&root))) - 1);
 }
 
 static void check_augmented(int nr_nodes)